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IFM Electronic SD8000 - Function; 4�1 Processing of the Measured Signals; 4�2 Volumetric Flow Monitoring; 4�3 Consumed Quantity Monitoring (Totalizer Function)

IFM Electronic SD8000
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5
UK
• All indications apply for standard volume flow to DIN ISO 2533, i�e� volume flow
at 1013 hPa, 15 °C and 0 % relative air humidity
Theunitcanbesettodifferentstandardconditions(→9.5.5and9.5.6).
• The general operating conditions of compressed air equipment apply
4 Function
4.1 Processing of the measured signals
• The unit displays the current process values�
• It generates 2 output signals according to the parameter setting�
OUT1: 4 selection options
Switching signal for volumetric flow limit value �����������������������������������(→9.2.1)
or switching signal for flow velocity limit value ������������������������������������(→9.2.1)
or pulse sequence for quantity meter �������������������������������������������������(→9.3.1)
or switching signal for preset counter �������������������������������������������������(→9.3.2)
OUT2: 6 selection options
Switching signal for volumetric flow limit value �����������������������������������(→9.2.2)
or switching signal for flow velocity limit value ������������������������������������(→9.2.2)
or switching signal for temperature limit value ������������������������������������(→9.4.1)
or analogue signal for volumetric flow quantity �����������������������������������(→9.2.3)
or analogue signal for flow velocity �����������������������������������������������������(→9.2.3)
or analogue signal for temperature �����������������������������������������������������(→9.4.2)
Instead of an output OUT2 (Pin2) can be used as an input
for an external reset signal: ����������������������������������������������������������������(→9.3.5)
4.2 Volumetric flow monitoring
The flow is monitored by a calorimetric measuring system, the measured signals
are evaluated by the electronics�
• 2 switching signals for volumetric flow limit values can be provided (output 1
andoutput2).Switchingfunctions→4.5.
• An analogue signal which is proportional to the volumetric flow (4���20 mA) can
beprovidedonoutput2.Analoguefunctions→4.6.
4.3 Consumed quantity monitoring (totalizer function)
The unit has an internal quantity meter which continuously totals the volumetric
flow quantityThe sum corresponds to the current consumed quantity since the
last reset�
• The current meter reading can be displayed�

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